|Loop nucleation and stress effects in ion-implanted silicon - Avci, Ibrahim|
Keywords: Ion implantation; Semiconductors--Defects; Semiconductor doping
|Depth profiling of low energy ions implanted into metals using the field ion microscope/imaging atom probe - Walck, Scott Douglas|
Keywords: Field ion microscopes; Ion implantation; Microscope and microscopy
|Raman measurements of dye-laser-annealed, ion implanted GaAs - Yao, Huade.|
This volume was digitized and made accessible online due to deterioration of the original print copy.
Keywords: Raman spectroscopy; Annealing of crystals; Gallium arsenide semiconductors; Dye lasers; Ion implantation
|Fluorescent antibody detection of microorganisms in terrestrial environments - Schmidt, E. L|
The fluorescent antibody technique and its use in direct microscopic examination of the soil is discussed. Feasibility analyses were made to determine if the method could be used to simultaneously observe and recognize microorganisms in the soil. Some data indicate this may be possible. Data are also given on two related problems involving the interaction of soil microorganisms with plant roots to form symbiotic structures...
Keywords: FLUORINE; HYDROGEN; LUNAR SOIL; POLLUTION; APOLLO 17 FLIGHT; ION IMPLANTATION; NUCLEAR MAGNETIC RESONANCE; TEFLON (TRADEMARK)
|Rutherford backscattering in ion-implanted and pulsed laser annealed Si and Ge - Kiger, Shanalyn.|
This volume was digitized and made accessible online due to deterioration of the original print copy.
Keywords: Backscattering; Ion implantation; Semiconductors--Impurity distribution; Semiconductor lasers; Germanium--Spectra; Silicon--Spectra
|Effects of retardation in relativistic equations with confining interaction - Maung, Khin Maung|
A method has been developed for solving two body relativistic bound state equations in momentum space with a confining interaction. A total of six different three dimensional reductions of the Bethe-Salpeter equations are studied with particular emphasis placed on the competing roles of relativistic kinematics and retardation. The results indicate that these two effects counteract each other and this sheds some light on why nonrelativistic models of meson spectroscopy have been quite successful.
Keywords: COLOR; IMPURITIES; INVENTIONS; ION IMPLANTATION; SUBSTRATES; THERMAL DIFFUSION; TRANSPARENCE; DISPLAY DEVICES; ELECTROLUMINESCENCE; INSULATORS; LUMINESCENCE; PHOSPHORS; CONDUCTORS; DEPOSITION; ELECTRIC FIELDS
|Introduction to the JAWS Program - Mccarthy, Joh|
The JAWS Project is the Joint Airport Weather Studies project conceived in 1980 jointly between the National Center for Atmospheric Research and the Univ. of Chicago. The objectives of the program are threefold: (1) Basic scientific characterization of the microbursts and the statistics of microbursts occurrence; (2) Detection and warning, using the Low Level Wind Shear Alert System (LLWSAS) operation and performance; and (3) Doppler radar and airborne systems...
Keywords: EPITAXY; ION IMPLANTATION; FLOAT ZONES; JUNCTION TRANSISTORS; SEMICONDUCTORS (MATERIALS); SOLAR CELLS; WAFERS; CRYSTAL DEFECTS; DOPED CRYSTALS; EMITTERS
|Quality requirements for reclaimed/recycled water - Janik, Daniel S.|
Water used during current and previous space missions has been either carried or made aloft. Future human space endeavors will require some form of water reclamation and recycling. There is little experience in the U.S. space program with this technology. Water reclamation and recycling constitute engineering challenges of the broadest nature that will require an intensive research and development effort if this technology is to mature in time for practical use on the proposed U.S...
Keywords: HOMOJUNCTIONS; INDIUM PHOSPHIDES; PHOTOVOLTAIC CELLS; RADIATION EFFECTS; SPACECRAFT POWER SUPPLIES; EXTRATERRESTRIAL RADIATION; ION IMPLANTATION; LIQUID PHASE EPITAXY; VAPOR DEPOSITION
|EDIN design study alternate space shuttle booster replacement concepts. Volume 1: Engineering analysis - Demakes, P. T.|
The use of a recoverable liquid rocket booster (LRB) system to replace the existing solid rocket booster (SRB) system for the shuttle was studied. Historical weight estimating relationships were developed for the LRB using Saturn technology and modified as required. Mission performance was computed using February 1975 shuttle configuration groundrules to allow reasonable comparison of the existing shuttle with the study designs...
Keywords: ELECTRON BOMBARDMENT; CUTTING; ION SOURCES; TEXTURES; VACUUM DEPOSITION; ION BEAMS; ION IMPACT; ION IMPLANTATION; SURFACE FINISHING; TECHNOLOGY ASSESSMENT; CLEANING; CROSSLINKING; CRYSTAL DEFECTS
|BOREAS TE-1 CH4 Flux Data Over The SSA-OA - Anderson, Darwin|
The BOREAS TE-1 team collected various data to characterize the soil-plant systems in the BOREAS SSA. Particular emphasis was placed on nutrient biochemistry, the stores and transfers of organic carbon, and how the characteristics were related to measured methane fluxes. The overall transect in the Prince Albert National Park (Saskatchewan, Canada) included the major plant communities and related soils that occurred in that section of the boreal forest...
Keywords: PLANETARY MAGNETOSPHERES; RUNGE-KUTTA METHOD; SATELLITE ORBITS; ENERGETIC PARTICLES; GALILEAN SATELLITES; JUPITER (PLANET); ATOMIC INTERACTIONS; GALILEO PROJECT; MAGNETIC FIELDS; ELECTRIC FIELDS; ION IMPLANTATION
|Measurement of Critical Contact Angle in a Microgravity Space Experiment - Concus, P.|
Mathematical theory predicts that small changes in container shape or in contact angle can give rise to large shifts of liquid in a microgravity environment. This phenomenon was investigated in the Interface Configuration Experiment on board the USML-2 Space Shuttle flight. The experiment's ''double proboscis'' containers were designed to strike a balance between conflicting requirements of sizable volume of liquid shift (for ease of observation) and abruptness of the shift (for accurate determi...
Keywords: COATING; ION IMPLANTATION; HIGH VACUUM; CARBON; HYDROGENATION; AMORPHOUS MATERIALS; SELF LUBRICATING MATERIALS; DIAMOND FILMS; SURFACE LAYERS; WEAR RESISTANCE; BORON NITRIDES; COEFFICIENT OF FRICTION; THIN FILMS; VAPOR DEPOSITION
|A NASA Perspective and Validation and Testing of Design Hardening for the Natural Space Radiation Environment (GOMAC Tech 03) - LaBel, Kenneth A.|
With the dearth of dedicated radiation hardened foundries, new and novel techniques are being developed for hardening designs using non-dedicated foundry services. In this paper, we will discuss the implications of validating these methods for the natural space radiation environment issues: total ionizing dose (TID) and single event effects (SEE). Topics of discussion include: Types of tests that are required, Design coverage (i.e., design libraries: do they need validating for each application)...
Keywords: ELECTRON MOBILITY; SILICON; PHOSPHORUS; ANNEALING; ION IMPLANTATION; MOLECULAR BEAM EPITAXY; HIGH ELECTRON MOBILITY TRANSISTORS; SOS (SEMICONDUCTORS); SILICON FILMS; SAPPHIRE; ELECTRON DENSITY (CONCENTRATION); ROOM TEMPERATURE
|Some comparisons of US and USSR aircraft design developments - Spearman, M. L|
A review is given of the design and development of some US and USSR aircraft. The emphasis is on the historical development of large aircraft-civil and military transports and bombers. Design trends are somewhat similar for the two countries and indications are that some fundamental characteristics are dictated more by ideological differences rather than technological differences. A brief description is given in a more or less chronological order of the major bomber aircraft, major civil and mil...
Keywords: ABSORPTANCE; SEMICONDUCTORS (MATERIALS); SOLAR CELLS; SOLAR GENERATORS; TEMPERATURE EFFECTS; ULTRAVIOLET RADIATION; CORROSION; DESORPTION; ELECTRICAL MEASUREMENT; HUMIDITY; ION IMPLANTATION; PHOTOVOLTAIC EFFECT; POTTING COMPOUNDS; RADIATION EFFECTS
|Vibration characteristics of the HPOTP (High Pressure Oxygen Turbopump) of the SSME (Space Shuttle Main Engine) - Childs, D. W.|
A review is presented of various rotordynamic problems which have been encountered and eliminated in developing the current flight engines, and continuing subsynchronous problems which are being encountered in developing a 109% power level engine. The basic model for the High Pressure Oxygen Turbopump (HPOTP) of the SSME including the structural dynamic model for the rotor and housing and component models for the liquid and gas seals, turbine-clearance excitation forces, and impeller-diffuser fo...
Keywords: BALL BEARINGS; ION IMPLANTATION; ION PLATING; POWDER METALLURGY; SHEAR STRESS; WEAR; CRYOGENICS; FATIGUE LIFE; SPACE SHUTTLE MAIN ENGINE; STEELS; TURBINE PUMPS; CHROMIUM; CRACK INITIATION; CRACK PROPAGATION
|Onboard high rate/capacity data system enhanced test bed performance requirements - NON|
This document describes the Onboard High Rate/Capacity Data System Enhanced Test Bed (ETC) performance requirements (ETB). The ETB requirements will be used to trade studies and design efforts to implement ETB with resulting specifications. Only primary performance requirements are given. There is an overview of the ETB and identifying Engineering Development Modules (EDM's) provided in the ETB facility...
Keywords: ALUMINUM GALLIUM ARSENIDES; THIN FILMS; CARRIER LIFETIME; FABRICATION; SINGLE CRYSTALS; SUBSTRATES; WEIGHT REDUCTION; EPITAXY; GALLIUM ARSENIDES; ION IMPLANTATION; P-N JUNCTIONS; QUANTUM EFFICIENCY; SEMICONDUCTORS (MATERIALS); SOLAR CELLS; SPACECRAFT POWER SUPPLIES
|MIT6.774F04 - MIT OpenCourseWare|
This course is offered to graduates and focuses on understanding the fundamental principles of the "front-end" processes used in the fabrication of devices for silicon integrated circuits. This includes advanced physical models and practical aspects of major processes, such as oxidation, diffusion, ion implantation, and epitaxy. Other topics covered include: high performance MOS and bipolar devices including ultra-thin gate oxides, implant-damage enhanced diffusion, advanced metrology, and new m...
Keywords: fabrication processes; silicon; integrated circuits; monolithic integrated circuits; physical models; bulk crystal growth; thermal oxidation; solid-state diffusion; ion implantation; epitaxial deposition; chemical vapor deposition; physical vapor deposition; refractory metal silicides; plasma and reactive ion etching; rapid thermal processing; process modeling; process simulation; technological limitations; integrated circuit design; integrated circuit fabrication; device operation; sige materials; processing